package com.wyy.controller;

import com.fasterxml.jackson.databind.util.ObjectBuffer;
import com.wyy.pojo.Result;
import com.wyy.pojo.User;
import com.wyy.service.UserService;
import com.wyy.utils.JwtUtil;
import com.wyy.utils.Md5Util;
import com.wyy.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.apache.catalina.util.StringUtil;
import org.hibernate.validator.constraints.URL;
import org.junit.jupiter.api.AfterEach;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //注册
    @PostMapping("register")
    public Result register(@Pattern(regexp = "^\\S{5,16}") String username,
                           @Pattern(regexp = "^\\S{5,16}") String password) {

        User u = userService.findByUserName(username);
        if (u == null) {
            //可以注册账号
            userService.register(username, password);
            return Result.success();
        } else {
            //账号已经存在
            return Result.error("账户名已被占用");
        }
    }
    //登录
    @PostMapping("login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}") String username,
                                @Pattern(regexp = "^\\S{5,16}") String password) {
        //根据用户名查找user
        User loginUser = userService.findByUserName(username);
        //判断用户是否存在
        if (loginUser == null) {
            return Result.error("用户名错误");
        }
        //判断密码是否正确
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())) {
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginUser.getId());
            claims.put("username", loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token 存储到 Redis中
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.set(token, token,1, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    //获取用户详细信息
    @GetMapping("/userInfo")
    public Result userInfo(/*@RequestHeader(name = "Authorization")String token*/) {
        //根据token获取名字
        /*Map<String, Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");*/
        Map<String,Object>  map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        //根据用户名查询用户
        User user = userService.findByUserName(username);
        return Result.success(user);

    }

    //更新用户基本信息
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user) {//
        userService.update(user);
        return Result.success();
    }
    //更新头像信息
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }
    //更新用户密码
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token) {
        //检验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if (!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");
        }
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原秘密填写不正确");
        }
        if (!newPwd.equals(rePwd)) {
            return Result.error("两次填写新密码不一样");
        }
        userService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        return Result.success();


    }

}
